813
FNCA52 TJSJ 290730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST FRI MAY 29 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-292000-
SOUTHEAST COASTAL PLAINS-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10
TEMP (24H TREND) 90 (+2) 73 (-3) 91
RH % (24H TREND) 56 (-1) 95 (+12) 55
WIND 20FT/EARLY(MPH) E 13 E 12 E 13
WIND 20FT/LATE(MPH) SE 16 E 12 SE 14
MIXING HGT(FT-AGL/MSL)4820 5000
TRANSPORT WND (MPH) E 13 SE 18
VENT RATE (KT-FT) 53020 80000
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-292000-
SOUTHERN HILLS-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10
TEMP (24H TREND) 87 (+3) 69 (-5) 88
RH % (24H TREND) 62 (-5) 99 (+13) 60
WIND 20FT/EARLY(MPH) E 11 E 11 SE 12
WIND 20FT/LATE(MPH) SE 12 E 12 SE 12
MIXING HGT(FT-AGL/MSL)5660 5710
TRANSPORT WND (MPH) E 12 SE 17
VENT RATE (KT-FT) 56600 85650
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-292000-
NORTH COASTAL PLAINS-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 20 20
TEMP (24H TREND) 90 (+3) 72 (-3) 91
RH % (24H TREND) 60 (-7) 100 (+13) 57
WIND 20FT/EARLY(MPH) E 11 E 12 E 12
WIND 20FT/LATE(MPH) E 17 SE 12 E 16
MIXING HGT(FT-AGL/MSL)4820 5620
TRANSPORT WND (MPH) E 10 SE 14
VENT RATE (KT-FT) 43380 67440
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-292000-
NORTHERN HILLS-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 10 50
TEMP (24H TREND) 88 (+2) 69 (-4) 90
RH % (24H TREND) 61 (-6) 100 (+11) 57
WIND 20FT/EARLY(MPH) E 9 SE 10 SE 10
WIND 20FT/LATE(MPH) E 14 SE 6 SE 14
MIXING HGT(FT-AGL/MSL)5860 6340
TRANSPORT WND (MPH) SE 8 SE 12
VENT RATE (KT-FT) 41020 63400
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-292000-
WEST COAST-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 10
TEMP (24H TREND) 91 (+1) 73 (-2) 92
RH % (24H TREND) 60 (-5) 98 (+11) 58
WIND 20FT/EARLY(MPH) E 11 E 11 E 14
WIND 20FT/LATE(MPH) SE 12 E 13 E 14
MIXING HGT(FT-AGL/MSL)4510 5210
TRANSPORT WND (MPH) E 9 SE 14
VENT RATE (KT-FT) 36080 62520
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-292000-
EASTERN INTERIOR-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 20
TEMP (24H TREND) 88 (+3) 70 (-4) 89
RH % (24H TREND) 62 (-4) 99 (+11) 59
WIND 20FT/EARLY(MPH) SE 11 SE 13 SE 13
WIND 20FT/LATE(MPH) SE 13 SE 13 SE 14
MIXING HGT(FT-AGL/MSL)5960 5870
TRANSPORT WND (MPH) SE 12 SE 17
VENT RATE (KT-FT) 59600 88050
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-292000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 30
TEMP (24H TREND) 83 (+3) 69 (-3) 83
RH % (24H TREND) 68 (-4) 100 (+8) 68
WIND 20FT/EARLY(MPH) SE 10 SE 11 SE 11
WIND 20FT/LATE(MPH) SE 11 SE 11 SE 12
MIXING HGT(FT-AGL/MSL)3780 4510
TRANSPORT WND (MPH) SE 12 SE 18
VENT RATE (KT-FT) 37800 72160
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-292000-
CENTRAL MOUNTAIN RANGE-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 20
TEMP (24H TREND) 86 (+4) 67 (-4) 88
RH % (24H TREND) 63 (-8) 100 (+11) 61
WIND 20FT/EARLY(MPH) SE 8 SE 6 SE 10
WIND 20FT/LATE(MPH) SE 10 SE 6 SE 10
MIXING HGT(FT-AGL/MSL)6530 6600
TRANSPORT WND (MPH) SE 8 SE 13
VENT RATE (KT-FT) 45710 72600
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-292000-
CAYEY MOUNTAIN RANGE-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 30
TEMP (24H TREND) 83 (+2) 69 (-4) 83
RH % (24H TREND) 68 (-3) 100 (+10) 67
WIND 20FT/EARLY(MPH) E 9 E 10 SE 10
WIND 20FT/LATE(MPH) SE 11 E 10 SE 11
MIXING HGT(FT-AGL/MSL)4810 5170
TRANSPORT WND (MPH) E 13 SE 18
VENT RATE (KT-FT) 52910 82720
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-292000-
VIEQUES-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 20
TEMP (24H TREND) 87 (-2) 75 (-2) 88
RH % (24H TREND) 62 (+2) 91 (+8) 63
WIND 20FT/EARLY(MPH) E 11 E 16 E 14
WIND 20FT/LATE(MPH) E 13 E 17 E 12
MIXING HGT(FT-AGL/MSL)2940 3120
TRANSPORT WND (MPH) E 15 E 20
VENT RATE (KT-FT) 38220 53040
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-292000-
CULEBRA-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 10
TEMP (24H TREND) 89 (+1) 76 (-2) 89
RH % (24H TREND) 59 (-3) 90 (+7) 61
WIND 20FT/EARLY(MPH) E 12 E 16 E 14
WIND 20FT/LATE(MPH) E 13 E 17 E 13
MIXING HGT(FT-AGL/MSL)3000 3090
TRANSPORT WND (MPH) E 15 E 21
VENT RATE (KT-FT) 39000 55620
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-292000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 20 0
TEMP (24H TREND) 92 (+3) 73 (-4) 92
RH % (24H TREND) 54 (-3) 96 (+16) 54
WIND 20FT/EARLY(MPH) E 16 E 14 E 19
WIND 20FT/LATE(MPH) SE 18 E 18 SE 19
MIXING HGT(FT-AGL/MSL)4700 5310
TRANSPORT WND (MPH) E 15 SE 20
VENT RATE (KT-FT) 61100 90270
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-292000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 10
TEMP (24H TREND) 86 (0) 76 (-2) 86
RH % (24H TREND) 63 (-1) 91 (+8) 64
WIND 20FT/EARLY(MPH) E 12 E 17 E 14
WIND 20FT/LATE(MPH) E 13 E 17 E 13
MIXING HGT(FT-AGL/MSL)2960 2770
TRANSPORT WND (MPH) E 15 E 20
VENT RATE (KT-FT) 38480 47090
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-292000-
ST CROIX-
330 AM AST FRI MAY 29 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 10
TEMP (24H TREND) 88 (+1) 75 (-5) 88
RH % (24H TREND) 63 (-2) 91 (+12) 65
WIND 20FT/EARLY(MPH) E 12 E 17 E 13
WIND 20FT/LATE(MPH) E 13 E 17 E 14
MIXING HGT(FT-AGL/MSL)4170 4440
TRANSPORT WND (MPH) E 17 E 22
VENT RATE (KT-FT) 62550 84360
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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